3年经验，一般应该是4轮+吃饭
我是总共5轮，4轮coding1轮system design
第1轮：（1）merge two sorted list, do it in place; (2) in place去除重复的char，后面补0; (3) given a function random(), which will return true or false at random. Implement randomInt() which calls random() internally.
第2轮：given a list of chars, find all the possible words that are in the given dictionary. analyze time complexity and space complexity
第3轮：气令儿 given an array of sorted distinct integers while we can’t get its size, find the index of the target number and return its index, if not found, return -1
第4轮：system design, rate limiter
第5轮：伞刘儿 calculate the number of click times in the last x minutes. implement click(delta), get_clicks(x_minutes). Follow up: if we keep adding more clicks, memory usage will go up. How do we deal with this? (We can delete clicks that happen 1 day ago)
问的bq：
1、为什么选oracle
2、介绍你自己
3、最自豪的一件technical的事
4、跟同事发生冲突怎么办
5、talk about a thing that takes a long time to do, and you need to divide it up into several small steps
6、讲一下你之前犯过的一个错误，以及你如何解决的（是你发现的bug还是别人发现的，为什么刚开始没有发现，在修bug之前要是否考虑了该bug的cost）